package com.mes.web.controller.common;

import com.mes.common.config.MesConfig;
import com.mes.common.constant.CacheConstants;
import com.mes.common.constant.Constants;
import com.mes.common.core.domain.AjaxResult;
import com.mes.common.core.redis.RedisCache;
import com.mes.common.utils.sign.Base64;
import com.mes.common.utils.uuid.IdUtils;
import com.mes.framework.cache.ConfigUtils;
import com.wf.captcha.ArithmeticCaptcha;
import com.wf.captcha.SpecCaptcha;
import com.wf.captcha.base.Captcha;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.FastByteArrayOutputStream;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.concurrent.TimeUnit;

/**
 * 验证码操作处理
 *
 * @author ruoyi
 */
@RestController
public class CaptchaController
{

    @Autowired
    private RedisCache redisCache;

    @Autowired(required = false)
    private MesConfig mesConfig;

    /**
     * 生成验证码
     */
    @GetMapping("/captchaImage")
    public AjaxResult getCode(HttpServletResponse response) throws IOException
    {
        AjaxResult ajax = AjaxResult.success();
        boolean captchaOnOff = ConfigUtils.getConfigBooleanValueByKey("sys.captcha.onOff",true);
        ajax.put("captchaOnOff", captchaOnOff);
        if (!captchaOnOff)
        {
            return ajax;
        }
        try {
            // 保存验证码信息
            String uuid = IdUtils.simpleUUID();
            String verifyKey = CacheConstants.CAPTCHA_CODE_KEY + uuid;

            String capStr = null;
            Captcha captcha = null;

            // 生成验证码
            String captchaType = mesConfig.getCaptchaType();
            // 生成验证码
            if ("math".equals(captchaType))
            {
                captcha =  new ArithmeticCaptcha();
                capStr = captcha.text();
            }
            else if ("char".equals(captchaType))
            {
                captcha = new SpecCaptcha();
                capStr = captcha.text();
            }

            redisCache.setCacheObject(verifyKey, capStr, Constants.CAPTCHA_EXPIRATION, TimeUnit.MINUTES);
            // 转换流信息写出
            FastByteArrayOutputStream os = new FastByteArrayOutputStream();
            captcha.out(os);

            ajax = AjaxResult.success();
            ajax.put("uuid", uuid);
            ajax.put("img", Base64.encode(os.toByteArray()));
        } catch (Exception e) {
            e.printStackTrace();
        }
        return ajax;
    }
}
